The Adjustment in

共享题干题                                            （一）
               The Adjustment in Understanding of Man's Relation to the Physical Universe
阅读下面的材料，回答下列的问题。
      Nowadays the scattering of galaxies and the astounding abundance of stars are forcing those who ponder such matters to a further adjustment of their concept of the place and function of man in the material universe.
      In the history of the____________（51）human mind, with its increasing knowledge of the surrounding context, there must have been a time when the philosophers of the____________（52）tribes began to realize that the world was not simply centered on man himself. The geocentric concept, which accepted a universe centered on the earth, then became common____________（53）
       The second adjustment in the understanding of man's relation to the physical universe was not generally acceptable____________（54）the sixteenth century. Copernican revolution soundly____________（55）the heliocentric Concept, the theory of a universe____________（56）on the sun. Man is a stubborn adherent to official dogma; eventually, however, he accepted the sun as the center.
      Then, forty years ago, came the need for a third adjustment. This____________（57）has deeply exploded man's pride and____________（58）, for it has carried with it the knowledge of the appalling number of galaxies.
     The galactocentric universe____________（59）puts the earth and its life near the edge of one great galaxy in a universe of millions of galaxies. Man becomes peripheral among the billions of stars of his own Milky Way; and, according to the revelations of paleontology and geochemistry, he is____________（60）and apparently transient in the____________（61）of cosmic time.
   The downgrading of the earth and sun and the elevation of the galaxies is not the end of this____________（ 62）of scientific pilgrims through philosophic fields. The need for another____________（63）adjustment now____________（ 64）not wholly unexpected by scientists,____________（65）wholly the result of one or two scientific revelations.
     Our new problem concerns the spread of life throughout the universe. As unsolicited spokesmen for all the earthly organisms of land, sea, and air, we ask the thrilling question: Are we alone?